diff --git a/delightful-contributors.md b/delightful-contributors.md
index 08bf940..9a95530 100644
--- a/delightful-contributors.md
+++ b/delightful-contributors.md
@@ -9,3 +9,4 @@ These fine people brought us delight by adding their gems of freedom to this del
 - [Caesar Schinas](https://caesarschinas.com/) (codeberg: [@caesar](https://codeberg.org/caesar), fediverse: [@caesar@indieweb.social](https://indieweb.social/@caesar))
 - [Loïc Dachary](https://dachary.org) (codeberg: [@dachary](https://codeberg.org/dachary), fediverse: [@dachary@mastodon.online](https://mastodon.online/@dachary))
 - [Max Kratz](https://maxkratz.com) (codeberg: [@maxkratz](https://codeberg.org/maxkratz), fediverse: [@maxkratz@chaos.social](https://chaos.social/@maxkratz))
+- [crystal](https://crystal.codeberg.page/) (codeberg: [@crystal](https://codeberg.org/crystal))